At that price get your hands on anything before you buy – perhaps more so new than second hand – it can be really hit and miss as to how straight and square they’ll cut. Pull the saw forward and down and wiggle the handle and see how much flex and slop there in the mechanism by watching the blade against the slot in the fence – wiggle left to right and twist. At that price point and even at double that you can get some real turkeys, but the odd gem too. I once had a cheap own brand B&Q one that was an absolute gem but there is a lot of rubbish
Theres lots that Evolution stuff is good at, but – being rigid isn’t always one of them, I’ve got a non sliding one which I only use for steel cutting as it flexes and slops far too much for woodwork
Personally, unless you want to make trenching cuts I’d spend the same money on non-sliding saw, perhaps with a bigger blade, it’ll be much more accurate.