Oak Leaf via Amazon offers the Luminwiz 75-watt Equivalent Dimmable LED Light Bulb 4-Pack in Soft White for $20.49. Coupon code "OVWOA242" cuts that to $16.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $7.82.) That's $33 off list and the lowest total price we could find.