The short answer is that on the two lower tiers, you are limited to 1GB for data, programs and packages.
But to trim your quote down to the minimum, you have the option to import your data from somewhere else in the cloud with this bit of code, which uses AWS S3, but not mandatory:
con <- url("https://s3-us-west-2.amazonaws.com/dslabs.nostromo/eda.Rda")
load(con)
close(con)
Github LFS, Google Drive, Dreamhost are other alternatives. I like S3, because I'm still in the free tier for S3 and it's darned fast.