You better narrow that down. They run from $24 to $1200, mostly depending on size. $24 goes to 3 inches: jewelry, not eyeglasses. 9-pin, not 179-pin inline. $1245 gets 5 GALLONs (22l), 19 inches (0.5m), enough for a small dog (but they shouldn't go in the ultrasound) or maybe a 19" rack panel.
So how big are your dirty bits?