The price of assembly rarely depends on the number of screws. It depends on time, weight and what happens before and after.
What pushes the price up
Tall pieces that need two people, wall fixing, sliding doors and anything that needs fine alignment. A wardrobe takes several times as long as a bookcase.
What is usually included
Assembly, final tightening, levelling and taking the packaging to wherever you agree. Always confirm that last point, because the cardboard from one wardrobe fills a car.
Where the extras appear
Dismantling old furniture, carrying between floors without a lift, fixing into plasterboard and pieces with missing fittings. Ask beforehand, not halfway through.
How to compare quotes
Ask for the total for the whole job, not an hourly rate. Two hourly quotes with different working speeds cannot be compared.
A sign of a serious quote
Someone who asks the brand, the number of pieces and which room it goes in is quoting properly. Someone who gives a number without asking anything is guessing.
In the OSCAR app the assembly price appears before you book, with no need for a site visit.