I have had several 6gallon kegs from my local dump, sorry, 'recycling centre' on several occasions, all propper ones, some expensive one if bought new, just need a good clean, im allways seeing them there. All plastic though, but a lot easier to keep sterile than wood.
Flip top bottles are expenive, the best ones though, couldnt tell you the best place to buy new.
Have you got or gonna make ya press?
I am looking up plans to make a press as I like my DIY stuff. They don't look hard to make.
All the best,
JoeD