Venal (adjective)
1. Capable of being bought or obtained for money or other valuable consideration; held for sale; salable; purchasable.
2. Capable of being corrupted.
e.g: Not everything was so venal in this operation, however. Sometimes votes were bought outright, but this was frowned on if the sums were too high.

Chary (adjective)
1. Wary; cautious.
2. Not giving or expending freely; sparing.
e.g: When I visited Sissinghurst with my growing family she was always welcoming, eager for our news but chary of her own.