I never dabble in quinellas and exactas but I thing I know is in boxing selections the cost is double.
2 selections boxed quinella 1 unit = $1
2 selections boxed exacta 1 unit = $2
3 selections boxed quinella 1 unit = $3
3 selections boxed exacta 1 unit = $6
and so on...
Im not sure on pricing as far as using bankers with othre selections goes, but boxing them is double.
LUV2BET

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get in the Q