Pretty much the cost of the pump itself
I did see some small pumps for 19.99, although tubes and I think a
filter if it even can have one are seperate.

Beckett sells a bell fountain pump (with all the connections) for that
price. Stick the pump in a small bucket, vinyl screening wadded up inside
and a piece rubber-banded around the top, fountain pipe out the top and you
have a filter for your pump (DIY). Actually the latest Beckett fountain
pumps in that price range come with a foam filter around them, that works
fairly well for my ponsai with low stocking rate. 2 large goldfish would
clog it up quickly.

A solar powered one would really be excellent for me, I believe, but
the price of the pump itself is pretty steep.

Actually the pumps are cheap, under $10, but the panel is what is pricey, I
wasn't impressed with mine, replaced the pump twice as it died before the
season was out.

(Mosquito Magnent):
http://www.rittenhouse.ca/tech_cente...ge.asp?LID=144

These would be okay, if you could talk your neighbor into putting it in his
yard, drawing them away from yours, imo. ;o) ~ jan
~ jan (Do you know where your water quality is?)