Manifesto co-owner Roisin O' Shea has received many queries about where customers may purchase her prints and paintings online. Roisin O' Shea prints are exclusively available online from the Celtic Shamrock online store. The Celtic Shamrock online store receives authentic and faithful giclee reproductions of the artist's work which have been quality assessed and signed by Roisin. Roisin is aware of poor-quality unauthorised reproductions being sold elsewhere and asks customers to only buy from authorised retailers.

Roisin's original watercolour paintings may be viewed in Manifesto's Roisin O' Shea online gallery.