This program will help you quickly export your csgo inventory to a csv file. It will automatically fetch latest steam market prices using csgobackpack api.
You'll need nodejs installed to use this program.
Install using:
npm install -g csgo-inventory-csv
Then just run csgo-inventory-csv
and the interactive prompts will guide you.
You can view the sample csv file to know what to expect as output of the program. Below is a gif demo: