Details guide by whitesushii!
Overlord Ainz & Albedo Exchange Guide
The exchange event is over!
Labyrinth Token Table
Referring to the table below, most players can only get 200,000 to 260,000 labyrinth tokens before the end of the event.
As such, you need at least 20,000 to 80,000 guild coins to be on the safe side.
By default, the average players make slightly over 5 summons a day excluding diamonds which translates to 417 guild coins a day or 25,858 over 62 days. This means you have to make up another 14,142 to 54,142 guild coins using diamonds (or if you already have some stored up) which roughly costs 46,167 to 176,753 diamonds.
This is actually really steep because diamond-wise, the average player obtains slightly over 1k per day when accounting for every single source (events, redemption codes, pushing campaign) so even over 62 days, you will only be able to get around 70k diamonds at best. I recommend just start saving diamonds.