Put a HiFi label on something & you will find inflated prices. This is especially true at Adelphi.
Went there & saw one at a HiFi shop selling for $680. Didn't ask for further details because I doubt it could handle 2,000+ watts because it is too small.
I saw something in Sim Lim Tower that is rated for 3,000 watts & selling for only $285. This is probably what I'll be getting because the price is reasonable & it looks industrial. The only other 3,000 watt model I saw was in Sim Lim Square selling for $850.