I think the RRP in USA is only US$150… so that HK listing at $159.95 isn’t doing anyone any favours.
Down here they were A$350 when they arrived 2 mths ago; yesterday the same LHS had them for $295.
Beware, you can seriously blow a lot of dough on Mini-T hopups. Bearings, motors, wheels, tyres, bodyshells (different colours + a Hummer and a VW Beetle coming soon), oil shocks…