Values can only be given in the broadest terms. So much depends on condition, desirability, rarity, even size or particular elements within an item such as a particular millefiori cane, or an unusual colour variation in an abstract design. Also, there can be substantial differences in "values" for insurance purposes, auction expectations (as a basis for estimates), resale by general dealers, resale by specialist dealers.
Many people in the GMB therefore do not like to comment on values and I usually fall into that group. However, I feel safe enough in commenting on some general resale or auction hopes ...
The general Chinese weights are often offered in "antiques and collector fairs" at anything from £2 to £30. Whether they are actuially sold at the asking price is another matter. General Murano weights can be found in auctions and fairs for around £20 to £50 but better quality ones can be more expensive. Vasart and Strathearn weights are very difficult to assess these days because several collectors have been happy to pay increasing prices, but the smaller ones with basic millefiori patterns really ought to be no more than £10 or £20 at an auction or fair.