Low Supply Coins

Are these good buys or even on fractions of? A lot of these coins have low max supply’s or total supply’s are these good buys like for that reason?, everyone talks about Bitcoin’s 21,000,000 max supply and some of these like ULTIMA has a max supply of 100,000.00 on CMC or yearn.finance (YFI) has a total supply of 36,646, or even like TAO (~$600)with a max supply 21,000,000 now most of these are high in price but with added market Cap could some of these theoretically go way higher with these type of low supply’s.