I have a collection of 100k samples of market data by 04.02.2018 that you can buy. Most features (variables) are collected every 30 seconds. You can see the features here: https://steemit.com/trading/@tallfishinthesea/bitcoin-statistics-january-poll-what-variables-do-you-want-to-see Every day there will be 2880 samples added so by end 2018 I will have around 1 million samples. The two exchanges I poll are gdax and cex.io as their fees are very nice for bot devs. I also collect other variables like btceur, btcltc, btceth, ...
If you are interested to buy any just leave a comment.