Tea.pro is worth $xx,xxx easy
The highest ever sale of a domain with the keyword Tea in it is OrganicTea.com at $11,112. Tea is not something a consumer would buy online because it's a low cost item. It wouldn't make sense to promote your tea brand with a .pro because very few people have heard of .pro. The highest single word generic sale of the keyword is Tea.info at $4,100. .info suits tea alot more than .pro. I can imagine people wanting information on different types of tea and their health benefits but there is no professional context or pro aspiration for the keyword tea.
To sell a domain for alot of money in an alternative extension it's got to have some of the following features;
1) Generic (brandables don't work in alternative extensions)
2) B2C business proposition (generic domain names are far less important for B2B)
3) Coveted in the US (the US domain market is far more developed than other markets.)
4) Logical association with the extension (if a keyword is available in 300 different extensions, why buy it in .average?)
5) Develop-able by somebody with average technical skills (The people out there who develop minisites the better, it bids the price up for the keyword in all extensions)
6) High PPC (the fewer clicks a minisite developer needs to recoup their investment, the more the domain will sell for.)
7) High search volumes (can SEO for a less competed for long tail variation and still get a decent volume of traffic.)
8) Popular topic commercially. (greater demand for keyword in all extensions)
9) Decent margins (more money available to bid up the price of the keyword in all domains)
Tea is weak on 3) - 8) and although it probably has excellent margins, 99.9% of people are going to be buying their tea from a supermarket for convenience so 2) and 9) don't work either. My most successful alternative extension sale was Coupons.info at $17,600. It scores well on almost all of the above points and that's why it sold for $XX,XXX. On NP, Tea.pro would sell for high $XX.
The only decent .pro in the Namejet auction is Ask.pro because you would ask a professional a question or if you ask a question so it works with .pro but it's still a brandable and they don't sell as well as a generic keyword in alternative extensions. Run.pro is getting there because it's a sport and experts are professional athletes but it doesn't quite hang right.