Summoning based pet can't be sold anywhere on runescape, they are untradeable.
Note: If you are worried that it i taking up bank space there is a player-owned-house option to build a menagerie, these are used for storing pets o that they don't clog up space in your bank.
You have to hunt it in karamja.
sometimes
you can't. in order to store a pet of any kind in your house, you have to have it at 100% growth first. baby gecko's eat flies which can be bought at a pet store (there are 2 locations; 1 is in traverly and the other in yanille.) which are 10gp each or 100gp each (at the G.E)
no you can not sell your house on runescape.
gecko's eat flies and you can buy flies in pet shops all over runescape
No.
Are gecko lizards endangered?* But no they aren't. If they were endangered they wouldn't sell them as pets...
Yes they can
No, Your RuneScape House is based on your Construction Level.
You cant they have to be from 6 months to 1 year to start notceing ther sexes
Becuase sometimes in life, Things just suck.
You can sell them to players but there is no shop in runescape that sells or buys tiras.