Hello
Contrary to what some people might tell you whilst bidding, it's not possible to set an automatic upgrade on Magento unfortunately. It's not like Wordpress where by every time an update it rolled out, it's updated. Magento is an open source platform and as every installation is different (ie. extensions, version etc).
For the bid amount, I'm happy to upgrade all of your existing extentions, upgrade your platform to the latest, install all of the security patches available.
If you require just the version upgrading in the future, the bid amount would be halved as the security/extensions will unlikely need doing again.
Regards,
Aaron