Anybody want a free $100 to use for packs?

You can also buy Amazon coins with Amazon credit (duh).

You could use Amazon credit from Discover It card sign up bonus to buy packs. (http://www.amazon.com/gp/product/B00AW3IXZO/ref=ccmphp_swp_B00AW3IXZO?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=merchandised-search-4&pf_rd_r=0PN4BH4M3EFG50NJVF8Z&pf_rd_t=101&pf_rd_p=d325ff15-c523-4a44-aa2b-8051a29304dd%2Ff059df5a-b59b-4e9c-8c52-3903c2aa2b0a&pf_rd_i=3561432011)

I'm too lazy to run the math but that should be over 120 packs for free depending on what % promotion is running once you get your credit.

Bonus pro tip: you can earn $5 of Amazon credit every ~25 days with Bing Rewards to get some extra packs each month for free. (full disclosure: this is my referral link. https://www.bing.com/explore/rewards?PUBL=REFERAFRIEND&CREA=RAW&rrid=_7377b6ad-9a08-c545-45d7-0ab31c96f6ef)