What species type/species of trumpet snail is this?

[lucas]

I found these snails on eBay. They call them "brown Malaysian trumpet snails". Are these a rare variant of normal trumpet snails or a different species?

www.ebay.ca/itm/50-Brown-Malaysian-trumpet-snails/184316284015?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20180816085401%26meid%3Dc165122e14cd4543af9618e4fd458e7e%26pid%3D100970%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26sd%3D184316284015%26itm%3D184316284015%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100970.m5481&_trkparms=pageci%3Ac50a38a5-e5c9-11ea-bee9-74dbd180759e%7Cparentrq%3A1eeabd3a1740a9cd213af09dffffe1e6%7Ciid%3A1

[littlegoldsnail]

They just look like regular brown trumpets to me. Pretty common snail. Just a brown variant of the Malaysian trumpet.

[lucas]

Thanks