Having seen a Trangia in action, it's good, but blimey isn't the meths expensive?
Depends how you buy it. 500ml bottles from hardware shops tend to be ludicrously overpriced, better deals can be had online for larger quantities.
(Laboratory grade methanol can be competitive price wise, and doesn't taste of bittrex, but doesn't burn as hot as ethanol
[1].)
Although, tbh, cost of stove fuel is something that I don't really get hung up about, given how even expensive little gas cartridges last for ages, and are dwarfed by the cost of things like train tickets and camp site fees. The advantage of the trangia is that it Just Works, even when cold and/or windy, is stirring friendly and is relatively unlikely to set fire to your tent. Other stoves have other merits, and you can buy an awful lot of meths for the price of the multifuel burner.
[1] 'meths' being mostly ethanol, with a little methanol added to make it undrinktaxable.