Finally Vivacom has introduced data bundles that can be added to all their prepaid SIM cards (as opposed to special data-only SIM cards):
+Get Data, Mobile Prepaid, Mobile Services, Prices & Services, VIVACOM
The only interesting bundles are the larger ones:
L 150MB valid for 30 days for Lv 14.99 (€ 7.66)
XL 750MB valid for 60 days for Lv 19.99 (€ 10.22)
Currently both data options are available free of charge if you recharge your SIM with Lv >=20 or Lv >=49.99.
These data tariffs combined with the
"VIVA International" SIM card which provides reasonable international voice rates is probably the best choice for visitors who don't require too much data volume.
Remember that much of Vivacom's 3G coverage is based on UMTS900 which is not supported by all handsets.