i dont tink you got ripped off as tower is cheaper than hobbytown on all of the prices for the hpi bell and pinions
and associated makes good stuff so it will be better than redcats aluminum one is is junk onnly good thing about it is its shiny but shiny doesnt win races

Clutch Bell:Nitro 3, 2 Speed [HPI86039]
by HOBBY PRODUCTS INTERNATIONAL
Category: CSR-Gas Car/Truck Replacement Parts Price: $9.00

Tower's Low Price
HPI Clutch Bell 12mm 2-Speed Nitro 3 8.59


Pinion Gear,22Tx12mm:N2&3RS4 RTR [HPI76982]
by HOBBY PRODUCTS INTERNATIONAL
Category: CPG-Gears & Differentials Price: $5.00

Tower's Low Price
HPI Pinion Gear 22Tx12mm Nitro 2-Speed Nitro 3 4.79


Pinion Gear,17T X 12mm:N3RS4 RTR [HPI76977]
by HOBBY PRODUCTS INTERNATIONAL
Category: CPG-Gears & Differentials Price: $5.00

Tower's Low Price
HPI Aluminum Threaded Pinion Gear 17T Nitro 3 4.79