An engagement cake is a smaller version of the same purchase as a wedding cake and it is priced the same way: per portion, with the decoration hours on top. Because the guest count is usually lower and the design simpler, it is the cheapest way to find out whether a baker you are considering for the wedding is any good.
Priced per portion, the same as a wedding cake
Bakers work from a portion figure and multiply, which is why the guest count is the first thing they ask. An engagement party for thirty is a materially different order from a wedding for a hundred and thirty, and the design that looks right on one can be structurally impossible on the other. Ask for the portion figure rather than a total, since it makes two bakers comparable immediately and it lets you scale the same design up or down without a second consultation. Delivery and setup are separate and worth asking about even for a single tier, because a decorated cake does not travel well in a car boot.
Where cupcakes and dessert tables actually save
Cupcakes save on structure rather than on ingredients, which is why the saving is smaller than people expect and is largest at scale. A tiered cake needs internal support, careful transport and assembly on site; a tray of cupcakes needs none of that. Where they genuinely win is variety and service, since guests take one and nobody has to plate and cut anything. The cheapest arrangement of all is a small decorated cutting cake for the photographs with plain sheet cakes cut in the kitchen, which most bakers will quote without being asked twice.
Using it as a trial run
If you are likely to want the same baker for the wedding, order the engagement cake from them. It costs a fraction of the wedding order and it answers the questions a tasting cannot: whether they deliver on time, whether the finished object matches what was discussed, and whether the cake was still good on the second day. Ask at the time whether the fee is credited against a wedding booking, since some bakers do that and none of them mention it unprompted.
Questions people ask about engagement cakes
How are engagement cakes priced?
Per portion, with decoration hours on top, exactly like a wedding cake. Give the baker a guest count first and ask for the portion figure rather than a total.
Are cupcakes cheaper?
Somewhat, mainly by removing the structural work and the on-site assembly. The bigger saving is a small decorated cutting cake with plain sheet cakes cut out of sight.
Should we use the same baker for the wedding?
It is the best trial available, and far more informative than a tasting. Ask whether the cost is credited against a wedding order, since some bakers offer it.
How far ahead should we order?
Less than for a wedding, but popular bakers fill weekends. A few weeks is usually enough for a single tier, and longer if the design is complicated.