Blueberries

Hello!

Once again I'm in need of advice as I carry on with my gardening journey!

I bought two blueberries (kept in pots in ericaceous compost) in 2013. Varieties Bluecrop and Goldtraube.

I've had a bit of fruit from them, but the Goldtraube died inexplicably last year.

So I'm looking to buy another one for this year, but clueless as to which one will do well in a pot and go well with the Bluecrop.

Anybody help and advise roughly how much one will cost?

Many thanks!