i do want the ability to convert to SP but more important, i want the ability to trade for international usage. I think with these two requirements, it's best to buy from the developer. is that true?
No, I think you were wooed by the salesman and are trying to convince yourself that you should pay thousands of dollars more than the thing is worth.
It seems that you are a bit star struck by StarPoints (SPs). So, my first piece of advice (no matter what you decide) is to sign up for an SPG Amex, if you haven't already. For $65 a year, you can earn 1 StarPoint for every dollar you charge to the card + 1 StarPoint for every dollar charged at Starwood properties. Once you reach $30,000 spending in one calendar year, you're automatically upgraded to gold SPG status for one year. Free (or nearly free) SPs! Great deal.
My second piece of advice is that if you plan to travel internationally and can really get your bang for each StarPoint, consider just purchasing SPs when they go on sale each December. Normally they retail for 3.5 cents per SP, but in December they've been discounting them 20% to 2.8 cents. If you can beat that (and many people can in Europe), then go ahead and buy them when they're on sale. You are limited to 20,000 SPs per person, but if you have a spouse, you can gift 20,000 to her and then transfer her points to your account as needed. For $1120 you can buy 40,000 SPs per year -- no long term commitment or $20,000 investment required.
BEST CASE scenario if you plunk down $20k for a timeshare from the developer is 2.8 cents per dollar, and that is on the condition that MFs don't increase. (Ha!)
Oh, and here are some things your salesman might not have told you:
1) SPs earned by SVO conversion (or bonus SPs given to incentivize you to buy a timeshare from the developer) expire in 6 years.
2) SVO members may only convert their vacation ownership interest(s) into Starpoints in non-consecutive use years.
3) All maintenance fees, taxes and SVN membership fees are required to be paid in full prior to conversion of the vacation ownership interest into Starpoints.
4) The SP conversion rate is never adjusted. You'll always get the same number of SPs no matter if MFs increase (and they will) or if Starwood increases the number of SPs needed per night. So your rate of return will be diminished over time.
5) Many resorts have already reached the point where their conversion rate is worse than what you can buy from SPG.com on sale. SVR is at the point already. SVV is very close.
Finally, if you really, really want to buy from the developer, then do yourself a favor and learn about requalifying. That will mean buying a resale unit FIRST and then buying from the developer SECOND.
Good luck to you!