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Similar to InvisibleHand is a browser extension I built called PriceAdvance (http://www.priceadvance.com http://www.priceadvance.com). We have a browser addon f
by agotterer 13y ago
Similar to InvisibleHand is a browser extension I built called PriceAdvance (http://www.priceadvance.com http://www.priceadvance.com). We have a browser addon for FF and chrome which does realtime price comparison of the products you're browsing and offers coupons.