Mantric Rechargeable Remote Control Knicker Vibrator I got on sale for 50% off. I'm not super into the whole public thing, but I've been using it way more than my magic wand, that fucking tip is shaped perfectly. Plus it would make an excellent phaser prop.
Seems some if not all of the big online adult stores run frequent promotions, be that for "get a free X with purchase", buy one get one or just flat "40% off one item" so wait for the right promotion and jump on it.