I try to always have 10 individual designs in stock and 2 mixed packs. Every couple of years I'll discontinue one or two designs and add new ones to keep things fresh.
The cards are printed on 300gsm card stock and come packed in a cello-wrapper with a 90gsm white envelope or brown envelope (puffins and kittiwakes).

Cards can be bought individually, or in packs of 4 (2 x pre-selected packs of best sellers)

I usually have a selection of hand-printed cards available too.

These are a combination of one-offs, short limited editions and open editions (no limit on number printed).