売れ高 is read as うれだか (uredaka) and means sales.
うれだか
uredaka
うりあげだか
sales
ばいばいだか
sales amount
うりあげだかぜい
turnover tax
れんけつうりあげだか
consolidated sales
うりあげ
amount sold
うりば
favorable time to sell
うる
to sell
ばいばい
trade
うりもの
specialty
うりだす
to become popular
ばいしゅん
prostitution
ばいてん
stand