Although prices for most goods at CDz, your local music and video store, are higher than prices you can find online and at discount stores, it generally has selected merchandise on sale at very attractive prices. CDz apparently has decided to use a pricing strategy known as:

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.

answerreactive approach;