I was about to recharge my Voda Italy cards (two of them, just to keep them going for now) and noticed that the site now offers EUR 15 as the minimum amount (it used to be 3). Which is too much -- I'm poor, and our phones have enough credit on them already. Is there another way to top up for less?

You can buy a smaller card on e-bay :D

I looked already. The only offers I found for low-value recharges were "SOS ricariche", and I'm not quite sure how that works, but it seems you need less than 3 EUR credit for it to work (both cards have about 10 on them).

With 'Sos mi ricarichi' you can transfer 2 or 8 euro by a sim to other sim (both Vodafone, obviously:D): but you have more than 3 euro, so you can't use it:(
Perhaps in some italian shop it has possible to find a 5-euro-card yet, but i'm not sure. Just yesterday, i've been to 3 supermarkets, the minimum amount was 15 euro

Well, you can't use "SOS Ricarica" for the card validity :(

This is really annoying, as Voda just removed the 5 and 10 EUR recharge options from its website on 10 February. All the offers on eBay, except for one (which is an auction, not a Buy It Now, so there's no guarantee of getting it) are SOS. There seem to be no other online recharge sites in Italy, either.

When I was in Italy, I recharged the phone electronically several times at tabacchi, where they would enter the amount and print you out a code (or add it directly to the account), starting from 3 EUR. Is this no longer possible below 15, too?

One idea: Is it possible to do a bank transfer to recharge the account? (using IBAN number) It is for Vodafone Germany.

Mmm i'm not sure you can use that solution. I can try to see if i find a 5-euro-card;)

Yes, using 190.it you can do it but the minimum amount is again 15 € :P