Actually, perhaps we can try to analyze the sales condition of phase 1 units..
Almost all the phase 1 units (DSL, Cluster, SemiD) doesn't have discount on downpayment, purchasers need to pay at least RM 40k as the downpayment. If an investor can have 40k to pay the downpayment, logically I think he/she will have capability to hold and would not fire sale the property straight after VP.
There are some phase 1 buyers given some discount as well, as a compensation for non-DIBS scheme. The rate is not high, merely 3%, and majority of these units are more expensive in nature. This means they are paying close to RM 40k to lock the unit as well, hence I personally would believe they have holding power too.
At least 2/3 of the units are sold to these kind of purchasers, which I think they should have holding power and won't have fire sales.
Now the remaining 1/3 is sold to staffs and associates... I am not sure about the exact ratio staff to associate, but i think it is reasonable to assume a figure 50:50...
Associates only being given 2% discount (if not mistaken), means they would need to put in at least close to RM 40k for the units as well, hence generally I think they would have the holding capability too..
The remaining 50% of the 1/3 (or ~ 15% as a whole) would be staffs they able to get the high discount (5 - 10%). This is the group I presume would have the highest risk to have fire sales and perhaps the so called "sei gei" would arise. Nevertheless, they are staffs, means they are working in SP Setia, could it be so desperate for them to fire sales the unit till the SPA price? These group of people I foresee will be hunting the units with lowest entry cost (due to their low financial background) which only able to earn about 40k - 50k gross, even they have been given with 10% discount. Would they be so desperate? Let's wait and see..
As a conclusion, for Setia Ecohill phase 1 units, to have the "sei gei" units for sure is possible, but the amount would be small and I personally believe it would be very unlikely to occur as well. Therefore, if you really can get a "sei gai" unit during the VP, I would need to congratulate you, coz I strongly believe you must go through a "very strong competition" to get this "sei gai" units...
Nothing is impossible though, let's wait and see. No need to wait long, the coming 6 months will reveal the actual scenario...

Talk about Sei gai units, why not aim for the other projects in semenyih, tiara east also VP for sometimes, got Sei gai units at subsale sold at developer price or not? also ttdi grove and kajang 2 area, all developer price also at about 400k plus back then, now VP already, got Sei gai units or not?
someone show the tiara east subsale at more than 600k already, let me show the ttdi grove subsale...also more than 600k, any Sei gai units or not trans at below 500k?...obviously no....
So maybe it could only happen at SEH got Sei gai units? Haha. Let's slow slow wait la...