I may have to sell my brothers white lipped python for him so can anyone tell me the going rate for this breed of snake?

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0.0.2 corn snakes(ginga and boobah)
1.1.0 royal pythons (precious and big boy
0.0.1 speckled king snake (stripe)
0.0.1 bosc (paul)
0.1.0 green iguana (fray aka bitch)
0.0.1 beardie (Quasi)
0.0.1 african plated lizard
0.00.1 yellow bellied slider (terra)
1.1.0 chinchillas (chip and molly)
2.7.0 rats (sirius norrris,grace,piglet,smudge,sarah,pickle,baby,smel ly)
1.1.0 dogs(mysty and storm)

I got an adult pair for £300 (cb). Depends on age, temprement, cb/ltc/wc etc but i've seen single adults going for £175