SINGAPORE - Coveted items from the Balmain x H&M collection have started appearing on online stores as quickly as they flew off the shelves of H&M stores on Thursday morning as resellers try to cash in on their purchases.

As of 5pm today, no fewer than 10 items from the Balmain x H&M designer collaboration had been put up for sale on electronic marketplace Carousell, some for as much as three times the original price.

In one instance, the asking price of a plain Balmain logo T-shirt that costs $59.90 at the store, stood at $150, while a green sequined dress priced at $299 was going for $650 online.

Some listings on the site did not even specify a price, with sellers asking buyers to make their best offer.

Some sellers were also encouraging buyers to bid for items. For instance, the starting price for a gold embellished dress was $1,000. Its original price was $799.

Shoppers were also out in force with many putting up posts looking to purchase pieces from the collection. Some stated that they were willing to pay some $50 to $100 above original purchase price.

Earlier on Thursday, hundreds of eager shoppers waited in line and camped outside stores, some for more than 60 hours, to be the first to get their hands on the new collection.

Most of the collection was sold out within four hours of this morning's launch.

The French haute couture fashion house's tie-up with high-street label H&M was designed by Balmain's head designer Olivier Rousteing.

Over the years, H&M has previously tied-up with top brands and designers including Lanvin, Sonia Rykiel, Roberto Cavalli and Jimmy Choo.