GROCERY shopping is pricey these days - and that goes double for fashionable folks.

French luxury brand Celine is now selling a see-through "shopper bag" - aka a reusable plastic bag, but fancier.

The accessory first appeared on the Paris catwalk last autumn. It's now exclusively available for purchase at the Celine x Nordstrom pop-up in downtown Seattle, Washington from May 29.

The price tag? A très cool $US590 ($A757).

While some fashionistas have been pretty swept up in the bag, others were baffled by the cost.

"Really? 500+ for a plastic bag ... you gotta be kidding me," one person posted on Instagram.

"I never want to meet the type of person that would buy this," another added.

"It's LITERALLY a plastic bag."

This isn't the first time the fashion industry drew inspiration from humbler totes: Balenciaga updated Ikea's $1 blue plastic "Frakta" tote into a $US2145 ($A2750) leather carryall last spring.

Are they worth these prices? Debatable. But at least Celine's transparent about it.