Without checking up the exchange rate, it seems like a very good price, assuming it's in good condition with no leaks, etc. Parts are available from Nova too.

Ansco 130, and Liquidol (both available from Photographer's Formulary) last a very long time. The Ansco 130 formula is published, ordering it from the Formulary might be expensive for you. Liquidol is a liquid concentrate, so the shipping across the ocean is probably out of the question.

I've had good luck with Moersch Neutral which which what I'm currently using, and it's probably easier to buy on your side of the pond.

In open trays, the life of any developer is limited, but in the slot processor, there is minimal surface area exposed to air, then that gets closed off when the lid is in place, so that is a big factor in the developer longevity.