https://en.wikipedia.org/wiki/Selena_y_Los_Dinos
Most of her recordings are quite valuable-one LP said to be mint sealed in shrink wrap, supposedly sold for $12,000 in 2015! I have my doubts about that, however.
I have no clue about value of LPs (I did have rare of cccp that I loaned to a girl while in Uni, and I never saw her again.. and the vslue is in the thousands, last time I looked)...
But I DO know that she turned a local Tejano (popular in Texas only, at the time) into music that was VERY popular spreading from CAli to Texas down to Mexico, into international after she was murdered, all the way to Portugal and Spain.