@diviha Thanks for reaching out!
This year has brought an unprecedented number of bike sales, both to REI and beyond. That has put a lot of strain on the bike industry to remain in stock in many styles and brands of bikes. Our buyers are working hard to get as many bikes as possible for our customers, however, challenges to manufacturing, shipping, and processing is slowing that process. While we will continue to carry Brompton bikes in the future, it does not look like we will have any inventory before the end of the year, potentially at the beginning of December at the earliest. Your best bet will be to check back on REI.com to see if we have gotten any in stock.