Amazon cuts an extra 25% off a selection of jewelry and watches via coupon code "EXTRA25OFF". Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping starts at $5.48.) Deal ends September 7. A couple of best bets after coupon:
Sweet Boutique 4 U via eBay offers the Steampunk Men's Heart, Wings, & Gears Pendant for $1.80 with free shipping. That's the lowest total price we could find for a similar pendant by $8. This alloy pendant measures about 2.5" and includes a 22" chain.
Note that this item ships from mainland China and may take three to eight weeks to arrive.