good price on tubes right now at Competitive Cyclist. 10 Vittoria Ultralite Tubes for $15 (reg $60).
https://www.competitivecyclist.com/za/CCY?PAGE=BUY_PRODUCT_STANDARD&PRODUCT.ID=3987&CATEGORY.ID=40&MODE=&TFC=TRUE
https://www.competitivecyclist.com/za/CCY?PAGE=BUY_PRODUCT_STANDARD&PRODUCT.ID=3987&CATEGORY.ID=40&MODE=&TFC=TRUE