I would imagine your 'Ultimate Volt' bundle will have been replaced by another bundle name now. On my non-VM connection I can see similar-looking packages which are
Bigger Combo Bundle + Sports HD (£65pm for new customers and £150 pm from month 19)
or
Mega Volt Bundle (£84.99 pm for new customers of which £20 is to O2 for a SIM and £178 pm from month 19)
(not sure how easy VM makes it for existing customers to see these on a VM connection)
If your existing package is £71.84 with a £81 monthly credit that puts you back into similar territory to the above bundles at £152.84 at 'standard' pricing, so you are getting a modest discount of £15-ish off the 'standard' price with your renewal offer. You also seem to have some additional TV equipment include in your existing package.
Whether you can get any better deal from VM depends on the outcome of going through the renewal dance performance with VM to haggle whatever you can from them if you want to renew for something similar.
Be aware though if you change to a different package at renewal, there have been regular topics on here about customers thinking they were getting exactly the same bundle of services or 'equivalent' at renewal, only to find that certain things they were expecting to be present were not (usually to do with landline call plans and/or TV channels).