14 Teleports total, meaning 14 beacons required and 7 teleporters.
7x Teleporters @ 15k Each: 105,000
14x Beacons @ 10k Each: 140,000
Teleport room can vary. You can either have a large room with lots of teleports, or several smaller ones. I'll assume one big one for now as its more space-friendly.
1x Secure Teleport Room - 1,350,000 (Houses 8 teleports)
Power requirements:
7x Teleporters @ 50 power each: 350
Control requirements:
7x Teleporters @ 25 control each: 175
14x Beacons @ 5 control each: 70
Total prestige required: 1,350,245
That does NOT include the power and control rooms or items required to run them. If you're using the smallest plot, you will find it very difficult to place every teleport unless you have 4x Teleport Rooms (2x2 rooms which allow 2 teleports each). Which works out slightly cheaper at a cost of 600,000 prestige but gives you less space to place beacons inside.
Using that last example, the new total would be: 845,000 prestige.
Hope that helps.
Edit: I should point out that this assumes City of Heroes. Villain world has only 6 beacons to obtain (that im aware of), so you would only need 3 teleport rooms and 6 beacons total, bringing the cost down considerably.
Characters:
The Heroic Mary Grace (50)
The Mystical Thunderspark (50)
The Candy-loving Little Jenny (50)
To get the beacon for each zone, you need to visit every exploration badge location (whilst in SG/VG mode). Details of where to find them are at www.vidiotmaps.com . If you download the ingame overlay, the badges will be shown on the maps whilst ingame, making it easier to find them!
Main 50 & Badger Nine Claws Claws/Regen/Body
Other 50's Ph10x Brute Unjust Law Tanker Samantha Urai Scrapper Codename 1250 Scrapper
Cepheus Defender Nilus Scrapper Electro Field Blaster S.PONGE Tanker
Thanks.
I will have to give this a go on the weekend. 
Actually, I believe you'll find there are 21 zones you can acquire beacons to - so that's 11 teleporters. Our own hero base has 7 teleporters and a raid teleporter in one room, and 4 teleporters in another, which covers them all.
Villains have access to 8 beacons (4 teleporters) - the 8th beacon attainable being introduced with the Rikti War Zone for them.
The Intrepid's / The Institution - Union Server Hero / Villain Supergroups
Hi Everyone,
I will be modifying a base that my sg has soon, and was wondering what do I need for a teleporter to every map in CoH?
Is there specific items I need and how much would it cost to sort out?
ta