Unfortunately, Marc is correct. There is no final pricing, but it appears the 3-series, 4-parallel packs will be somewhere in the $220 range, and the funtana uses 3 of those packs, so about $600+ for the power. The 30-cell nimh packs cost about $150 if you buy the individual cells/wire/connectors/heatshrink and solder them up yourself like most of us do. Those li poly's are under the "thunder power" name, and you can check www.flightenergy.com for availability and pricing, when that's all finalized. i don't really know the real flight time on the funtana with those packs, but I do know that the video above with Jason flying was shot after over 12 minutes, demonstrating that power does not diminish with these batteries untill the end. Also, in one of the first few flights with them in the funtana, I heard that Tim was torque rolling at the 24 minute mark and still had full power to pull vertically out of hover. As with any new hobby application of a technology, the price will be high at first,.. and I hope these follow suit and decrease in cost at some point, because they could surely lead to a revolution in electric flight. Strange, it took almost a decade to evolve from 1200mah sub-C cells to 3300mah sub-C cells of the same size and weight,.. then considering these lith poly's, it's gone from the 3300mah cells to basically 7800mah for 1/3 less weight. It's really an exciting time for electric flight.