I don't think it's so much a "lemon" as it is a work in progress. If you download the VegaComb_HC3.2_Build9b.zip file from the link I provided earlier, the ShuttleTools.apk file can be found inside, under the /system/tools folder. Since Shuttle Tools is not a released app, your options are limited. It may very well work on your build 9 if you just sideload and install it as a user app. But if you are not comfortable doing this, then you should be able to return the product and get a refund.
The eBay seller clearly misrepresented the product being sold. He is telling you the app is preinstalled in build 9, yet the developer states it was not added until build 9b. Who do you think eBay is going to believe if the seller gives you any problem?
Help yourself while helping me: Sign up with Dropbox and we both get 250MB extra space. Thanx!