稅 = sales tax
The sales tax in L.A. is between 9.25% to 9.75%. (8.75% in Orange County/San Bernardino County, 9.75% in Los Angeles County) The sales tax is non-refundable for tourists.
For example: LV Keepall 55 w/ shoulder strap is $1,250 + 9.75% sales tax = $1,371.88
If you can get your friend to buy the bag for you in Orange County (like South Coast Plaza), then it costs $1,359.38. You save about US$12,50.