[pocketsand]

S3 has no minimum fee. For a small site they'll probably send you a 4 cent invoice each month. You can then throw cloudflare in front of the S3 box for free.

Alternatively, as others have said, you can just plop them on the server and call it a day.

[0xbadcafebee]

Let's see what the pricing calculator says. Assuming you stored 1GB of content, with 4MB images, and you transferred out 40GB of content each month:

  1 GB per month / 0.00390625 GB average item size = 256.00 unrounded number of objects
  1 GB x 0.0230000000 USD = 0.02 USD
  100,000 GET requests in a month x 0.0000004 USD per request = 0.04 USD (S3 Standard GET requests cost)
  40 GB x 0.0007 USD = 0.028 USD (S3 select returned cost)
  0.023 USD + 0.04 USD + 0.028 USD = 0.09 USD (Total S3 Standard Storage, data requests, S3 select cost)
  Internet: 40 GB x 0.09 USD per GB = 3.60 USD
  
  Total: $3.69

And for 1TB stored & transferred & 1M GETs each month:

  1,024 GB per month / 0.00390625 GB average item size = 262,144.00 unrounded number of objects
  1024 GB x 0.0230000000 USD = 23.55 USD
  1,000,000 GET requests in a month x 0.0000004 USD per request = 0.40 USD (S3 Standard GET requests cost)
  1,024 GB x 0.0007 USD = 0.7168 USD (S3 select returned cost)
  23.552 USD + 0.40 USD + 0.7168 USD = 24.67 USD (Total S3 Standard Storage, data requests, S3 select cost)
  262,144 number of objects x 0.000005 USD = 1.31072 USD (Cost for PUT, COPY, POST requests for initial data)
  Internet: 1024 GB x 0.09 USD per GB = 92.16 USD
  
  Total: $118.14

Assuming Cloudflare had a significant cache hit rate, you'd save a decent chunk of change.