Judi Rotenberg had an art gallery on Newbury Street in Boston from 1971 to 2010 where she exhibited the work of emerging and contemporary artists after not being able to sell her own pieces there. Her own work, however, has never really garnered the prices that she expected. The databases of prices for her work, most of of it large floral like yours, bring $200 to $300 at auction and that is where I would value this piece that you have described. In other words, take the money and run because her work will not go up in price.
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