Then congratulations (STS)!
STS, hope to see her (and you!) over the summer.
Following on from Trev's post and by way of comparison: our Poole dry stack is (within a few couple of quid) £3,800.00 pa but includes as many 'in and outs' as you want. Our frequent use makes this economical. It is closed over Christmas (seven days approx) but allows free pontoon mooring during that period if you elect to launch. It is semi-tidal so you need to watch your launch and return times during springs.
The local Suzuki engineer (Yellow Penguin) is based in the marina so servicing is on our doorstep (and very prompt and efficient).
With home only 15mins down the road, we've never used the clean toilets/showers available. We've been to the restaurant on site (recommended!) but as a venue in its own right rather than as part of any trip.
You need to use our marina regularly for it to pay but we do and we're happy with the arrangement for our use of it.