These are what I have been using for the last five years.
I have seen them drop as low as £12 per set but £20 is still a decent price.
https://www.amazon.co.uk/S-I-T-Strings-FN45105-foundations-Medium/dp/B07BZMQKZ8/ref=mp_s_a_1_1?crid=14P9ZJRPXN93U&dib=eyJ2IjoiMSJ9.6INnRyuUDC5ewjNnqJj1dHop2LhlXxBIiciX77hm7-E7T8LqZ2Ksn5X5bHpWWbQ-IBZ316ITynlNgDgrbaGglutivc1JKZkI1-Hoho6OY3DWpjz61LZpgvs9T-ZPWZyr1TfvWBc6A5Rh_g5uplO2yL9fJ5GGZlBdd96USUVGYATfAub5aOc856Fij07-xLme-lGd9pUZsCS_2aeF4sDRdg.n5Jikcd6EL7BJZxE0VV-CCxJ9qNnRzMAszm-Pjr6DTY&dib_tag=se&keywords=sit+bass+strings&qid=1743515970&sprefix=sit+bass+strings%2Caps%2C87&sr=8-1
I never expect a bass to have a perfect set-up out of the box, regardless of value.
The only time I would expect that is purchased directly from a luthier.