We have a limited amount of material for this next batch of Cellercisers. If you pre-ordered a Tri-fold, your order is secure. We are working on finishing the Tri-folds this week and plan to begin shipping by next week. 1/2 fold Cellercisers are still backordered until mid September. We will continue to take pre-orders at current pricing for 1/2 folds until the new shipment arrives. Prices on Tri-folds will increase next week. Pre-orders will continue to be honored at current pricing until then. Pre-order your Cellerciser!