Building a mesh with a Archer C50 v4.20, can it be done?

That's the router I got now, TP-link Archer C50(ES) 4.20, was planning to buy another router and use this one as the main connected to the modem, is the 8/64 too low for a 2-router mesh? or is it enough for this? what if I get a 128MB router and connect that one to the modem, could the Archer be part of the mesh or its too underpowered for that?

Should I just trash it and get two Xiaomi 4a giga? I'm on a budget

Try forum search?

Are they less than 30€ a piece?

Yeah like 22-26 USD in aliexpress but I'm in Argentina so it takes I kid you not 2 months to get here, if I'm lucky, because I got the worst mail service in the planet.

And what it costs in a store here? between 70 and 90 USD, its nuts

This pretty much same as in store in Europe

xiaomi 4a gigabit has broad variety in hardware, one you buy tomorrow may not be supported yet, or may be complete redesign and never work. ie. used/refurbished better.

EDIT: in same place no cudy or glinet (which should be cheap(er) ) and asus is official but 2x overseas prices.

In principle 8/64 can be used for mesh, but likely 24.10 is the last version for it ie 2 years left no more.
Still best of mesh is something a bit stronger connected to internet then the old one meshed, or better cabled to it.