Got mine for about 45quid, that was shop price.
They was marked up at 50 but I got a bit off the overall price coz i was buying a burm and other gear.
Say 35 to 55 I suppose, give or take.
Mine will be in a 1ft wide x 2ft deep x 1ft tall viv.
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"It's Howdey Doodey Time Kiddies, The Bad Man Is Here"
It's unsexed.
However those measurements should surfice for either a male or female.
Gotta remember, they don't climb or any of that and they probably aint gonna be hitting 24inches in lenght.
The measurments you have for a male are not really any different from keeping a 7ft Boa in a 5x2x2 viv.
Mine is getting 2ft deep coz it just happens to fit perfectly in with my plans, I do have an 18inch cube though that would also do just fine.
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"It's Howdey Doodey Time Kiddies, The Bad Man Is Here"