I'm not a specialist adviser but I would say it is starting to be a good time to look at subsale.

Many owners who bought the past 5 years are trying to offload quickly since the trend is now firmly down.

If you're buying from developer.....best of luck. I'm not a believer of new developments, especially in a soft market.

Nope not free.....please keep in mind developer says this free that free everything free, because all the costs are already priced into the property. It's all a sales gimmick.

As for your second question.....I can type an essay here. If you really want to learn how just PM me I can share a reliable source which can share a lot of material.