You can always make a purchase through Saatchi Art  https://www.saatchiart.com/abstract_art

Saatchi Art is the world’s leading online art gallery.

Based in Los Angeles, Saatchi Art is redefining the experience of buying and selling art by making it easy, convenient and welcoming for both collectors and artists.

Saatchi Art provides 7-Day money-back guarantee

Original artworks usually arrive within eleven (11) to fourteen (14) business days from time of order, depending on the origin and destination of the artwork as well as the time it takes to clear customs if the work is shipped internationally. From time of shipping, the artwork will usually arrive at the buyer’s destination between seven (7) to ten (10) business days, barring any delays due to customs clearance.