Looking for good but not exorbitantly costly 6922 and ECC83

My preamp tube set seems to be in need of replacement - getting occasional squealing on one channel which has changed sides with the channel inversion of the tubes.

Advice about good quality but relatively affordable 6922 and ECC83 would be welcome.
The same goes for suggestions about reliable suppliers - preferably in Europe since i live in France and parcels from the States etc get hit with import duties etc.

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Looking for good but not exorbitantly costly 6922 and ECC83