The assembled card without ROM and WD1772 is 45 EUR.
A complete card costs 64 EUR.
Previously, it was 60 EUR, but the new lot of WD1772 chips cost me twice as much as the previous one (15 USD/pcs)

I have only two last cards yet from this batch.

I ordered a dozen more PCBs.
It should be enough.

I don't understand what exactly you mean.
You mean something like that ?

The price of the WD1772 chip has increased to a ridiculous level.

WD1770 and VL1772 also can be used.

Same. Prices start at $ 25 per piece right now. In addition, it is becoming increasingly difficult to access.

I see VL1772 for a 12.95€, WD1770 for a 5-10$ on Ebay.

I'm starting to think about a replacement in CPLD or FPGA.

Anyway will be good idea!

Unfortunately, ALL of them can't properly format a floppy disk.

What happen with my FAFO?

This one working:
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And already see dozens in EXDOS cards under the decades.

Only one serie will be strange about 26-27 years ago: it is don't format with EXDOS command, says Not Ready at the start. But worked well with FAFO.

When EXDOS 1.4 developed I wanted to retest this problem, but don't find any of these chips, all worked flawlessly. Still will be interesting for EXDOS 3 development

What will be happen with these chips? Can you send back?
If no, then can you send me one for testing?
I also have a ZX Spectrum SpeccyDOS and Atari ST, both with 177x chip.

It is crazy Then need to avoid Korean version...

It is looks similar story to Made in Philippines Z80 CPUs.