where is the best place to find pussy pumps that are effective and a reasonable price?
please don't even contemplate this - nor your other enquiry about backdoor pumping. That is unless you want to risk prolapse in either orifice or internal haemorroids (UK spelling) becoming external ones!
Putting body cavities under negative pressure is not a good idea - forget the pics you've seen.
Clitoral suction, which you also enquire about is fine, with care, since there is no cavity. Suction over the urethral meatus is a no, no too.