I was in the market for the Boxster Spyder and you really need to do the top by yourself about 10 times..... then decide.
I had the dealer show me and I wasn't impressed. The top is a Pain in the Ass....period. No way around it. Biggest design flaw by far.
If you can deal with that....everything else about it worth the trade.
2006 Lotus Elise SC
2008 AW E92 M3 6MT - Sold
2004 AP2 S2000 - Sold