For me, unit's price should correlate with rental. Rental should be able to pay instalment. If cannot, then its imbalance. However, price would also be effected by the buyers. Like askarperang said, willing buyer wiling seller. I don't think subsale should follow lelong because lelong is uniques case. Some buyers are reluctant to buy lelong unit because of whatever reasons, so they buy subsale.

I agree, rental return is a strong (but not only) indicator of the property value.

I use 200k/RM1100 personally tho. We calculate very similar haha.