There are about a million wonderful screenprints available at Scrawl Collective, a site out of the UK. Most are farily inexpensive, and all are signed/numbered. I will show just a few, so to check out the full selection, visit Scrawl Collective.
29cmx 42cm, Edition of 150, 40 pounds:
42cm x 59cm, Edition of 150, 50 pounds:
29 cm x 42cm, Edition of 150, 30 pounds: