Hi Matt
From the OPT website at
http://www.optcorp.com/productList.a...00&mid=14&pg=1
I obtained the following prices in $US.
11" f/10 Aluminum SCT OTA with Standard StarBright Coatings [CE-91036] $1,995.00
11" f/10 Aluminum SCT OTA with StarBright XLT Coatings [CE-91036-XLT] $2,180.00
11" f/10 Carbon Fiber OTA with Standard StarBright Coatings [CE-91035] $2,095.00
11" f/10 Carbon Fiber OTA with StarBright XLT Coatings [CE-91035-XLT] $2,290.00
Alu Std: $1,995.00
Alu XLT: $2,180.00 (Alu XLT – Alu Std = $185)
CF Std: $2,095.00 (CF Std - Alu Std = $100)
CF XLT: $2,290.00 (CF XLT - Alu XLT = $110)
Looks like XLT adds $185/195 and CF adds $100/110 based on OPT prices.
Just check you are not comparing e.g. an Alu Std with a CF XLT which is $295.00.
Cheers
Dennis