smartbike.com does show some decent stat #
Monthly Searches: 12,276
Cost Per Click: $0.66 USD
Ad Competition: low
Data Age: Recent
Average Monthly Search Stats - Exact Match - [smartbike]
Monthly Searches: 731
Cost Per Click: $0.65 USD
Ad Competition: low
Data Age: Recent
Once a third word is added, become a little speculative. I see you are already listing for 2,390. I personally think that is very high for 0 direct match search on smartbikeshop.com Like said before, wait a few years maybe something. For now, undeveloped I appraise at $250-$400 aftermarket.