Web3 Developer Needed?

QuickNode are a great managed solution. The price really depends on the kind of data you need. For example, it will cost more if you need to make calls on an archive or full node. There is a good article about it here:

https://www.quicknode.com/guides/infrastructure/ethereum-full-node-vs-archive-node

ChainStack have cheaper options if you need archive data:

https://chainstack.com/ethereum-archive-nodes-on-chainstack/

However, the main problem I had even with these managed solutions is that there is still a tonne of work to do to extract, clean up and load the data into a database. Without using a service that does this for you, you will need to parse a huge amount of log data.

A good example of the difference is how Ethplorer build aggregated data for wallets and expose a bulk wallet monitor api:

https://ethplorer.io/posts/bulk-api-monitor

To do that with nodes would require you to parse transaction data for each wallet that goes back potentially to the beginning and then build up token balances, then ensure you are synced to a node to keep the data accurate. It's a big job.

If you can tell me what kind of data you are interested in I can give you a better idea of where to start.