Can I shop online if the item will probably only arrive after Tishah Be’Av?
Anslo, can iI shop in stores if i wont get any enjoyment from it now and there are sales now which I don’t know how long they will last?
I am off from work now and i will be very busy afterwards and I need to shop for seminary…
In general shopping should be avoided even for after the Nine Days.
However, if there are special reasons for shopping now, such as special sale prices, or having time now when you won’t have the freedom and time to shop around later, then it is permitted.
See Halichos Shlomo Chap. 13; Shut Or LeZion Chap. 25, no. 3.