Looking at a 2013 buyer‘s guide, low and mid range boards have similar prices while high end boards seem a good bit cheaper. Then again, looking at what was sold as high end back then, they don‘t really look better (tech/ feature wise) than boards that cost at best the same today.
Selecting the best motherboard for your gaming PC build is important to ensure upgradability going forward, access to Haswell/AMD overclocking features, and overall system stability. -
www.gamersnexus.net
The difference is if a €70 board is sufficient to run a CPU at its full performance, or not. Sure, they‘ll offer fewer features and a lower build / component quality, but as long as e.g. a Ryzen 5600X performs as intended on a €70 board, why not?
If otoh a $120+ board is the minimum to get the reviewed performance (referring to e.g. Techspot‘s B560 reviews) that‘s a different story altogether.
2700X runs fine with highest XMP settings on my B450 Tomahawk Max, but admittedly that was one of the better B450 boards.