What should you do with your money if you have lots of it and you are at the end of your life? If you've been a very successful investor or entrepreneur, your wealth may significantly exceed your ability to spend it in the time that you have left.

Of course, dying is an expensive process, because the government will want its slice of the action, either in capital gains taxes, donations taxes, or estate duties. Their final take depends on whether you own the assets in your own name or in entities that you put in place when you were poor. You can't pull any fancy tricks once you are already rich.

One option is to give the entire after-tax residual to your children. Another is to give it away to charity. Both of these routes can be pursued hastily, while you are alive, or slowly, once you are gone and your affairs are being wound up by your executor.

Warren Buffett will be 94 next month and he's worth $127 billion. He had planned to give his money to the Bill & Melinda Gates Foundation upon his demise, but he seems to have changed his mind.

Instead, his fortune will go to a charitable trust to be administered by his three children. They will only be able to spend the money by unanimous agreement. The problem is, they seem to have different agendas.

Susie, 71, runs the Sherwood Foundation in Nebraska. Peter, 66, runs the NoVo Foundation, which supports holistic projects in Kingston, New York. Howie, 69, pictured below, runs the Howard G. Buffett Foundation, which, according to its website, "invests primarily in global food security, conflict mitigation, combatting human trafficking and public safety." He's active all over the world, including a few wildlife conservation projects and massive farms in South Africa.

Considering how much money the tech industry makes, I was surprised to see that the recent $69 billion acquisition of Activision Blizzard by Microsoft was the biggest-ever deal in the sector. Take a look at the image below from App Economy Insights which ranks the largest tech acquisitions.

Elon Musk's purchase of Twitter was the fourth biggest ever which is quite impressive considering that it was an individual that did the buying.

There are a few other transaction on the list which I remember well such as the purchase of Arm by SoftBank, and WhatsApp by Facebook. Historically the success of large acquisitions is very mixed. Maybe that explains why these deals have not been as big or frequent as I would have expected.

Last week Shoprite introduced a major upgrade to its wholesale business, Cash & Carry. If you haven't heard of Cash & Carry before, think of it as a Makro merged with a Shoprite store; there are only 16 of them nationwide.

Cash & Carry has gone digital, with free delivery within 50km of the sending store. They hope to make it easier for spaza shops to stock up. Needing to drive to the nearest Cash & Carry outlet every few days costs time and money, and sitting on large amounts of stock is impractical and expensive. This new option is for owners to manage stock on their phones, at no cost if they are close enough. Saves time and money, and is great for their cash flow.

This could be bad news for competitors like Massmart's Jumbo and Shield brands, and Pick n Pay's Boxer brand. In my experience, Massmart and Pick n Pay are really bad at doing online delivery in the suburbs, so I can't imagine that they'll do any better at wholesale delivery to spaza shops in informal areas. By contrast, Shoprite and Checkers have an amazing logistics network.

Cash & Carry's new offering sounds like a win for spaza shop owners and consumers alike. Let me know if you have any insights or experience in this part of the economy, as I'm interested to know if this new service will transform the spaza shop supply chain.

Saks Fifth Avenue's parent company is buying Neiman Marcus for $2.65 billion, forming a major luxury retail player in the US. The deal, approved by both companies, should be announced soon. The new entity, Saks Global, will leverage Amazon's tech and logistics support, with Amazon taking a minority stake along with Salesforce. Amazon is putting another foot into brick-and-mortar retail.

HBC, which owns Saks, is financing the deal with $2 billion from investors like Rhone Capital and the Abu Dhabi Investment Council, plus $1.15 billion in debt from Apollo Global Management. Marc Metrick, currently leading Saks's e-commerce, will be the new CEO of the combined company.

The merger combines two struggling luxury retailers to create a $10 billion annual sales giant. Neiman Marcus, which has been around for over a century, introduced European luxury brands to the US market. Its sales have dipped slightly from $4.7 billion in 2013 after closing some stores, while Saks's sales have doubled to about $6 billion.

The luxury market has slowed, especially in North America, due to inflation and reduced spending power among mass affluent buyers. HBC recently raised $340 million by selling properties to boost cash flow. This merger aims to strengthen their position against rising supplier power and the challenges facing department stores like Macy's and Nordstrom.

The brain has 170 billion cells. They produce a lot of waste, but somehow the brain washes all the debris away - Science explains where brain waste goes.

Politicians are more concerned with front-page headlines than telling the truth. Wales plans to make it illegal for politicians to lie - Enforcement will be tricky.

Asian markets are mostly down this morning. Benchmarks in Hong Kong, India, Japan, and mainland China fell, while South Korea and Taiwan rose. TSMC was the standout performer, up 4% after reporting better-than-expected sales and profits.

In local company news, Sun International has urged the government to simplify the process for obtaining travel visas to South Africa, believing it would boost local tourism and the economy. Come on man, it's a no-brainer. Elsewhere, South32 is moving forward with plans to sell its New South Wales-based Illawarra mine in a $1.65 billion deal to an entity owned by Golden Energy and M Resources.

US equity futures are flat pre-market, as they recover from their long weekend. The Rand is currently at around R18.16 to the US Dollar.

It's the first day at work for the UK's new Labour Party government. Good luck to them.

On we go.