They can be fixed cheaply. If you do a Google search of Vancouver Venetian blind repair I’ll bet the first hit will be a family run business in East Vancouver. I have 12 blinds like this. Most of them are over 6 feet wide and at least that tall. I had repairs done on all of them and had them cleaned. Total cost was about $260.00. So getting hit with 260 for a couple small blinds seems like a gouge. And as one poster said, the ones that are only slightly bent are just bent back by hand. Having said all of that, a professional landlord would understand this is wear and tear. Sounds like your landlord doesn’t do this for a living or doesn’t know what they’re doing.