I am a 22 year old male. I will be landing at the Copenhagen Airport on Thursday around noon and from there on have to reach Gothenburg. I don't have any strict time limits about reaching Gothenburg as long as I reach there by 6 am next day. I would like to travel as cheap as possible without overly compromising with comforts. Also, if possible, probably explore Copenhagen in the very limited time that I have. I will have a female friend travelling along with me.
What's the best way to reach Gothenburg under the above criteria and when should I book the tickets for the suggested transport method and from where? Does it make sense to book it now and save some money or book it on reaching Copenhagen to ensure flexibility (which might come in handy if the flight's delayed) without causing a major rise in prices? A fluctuation of under SEK 100 is manageable.
I do not mind buses either. Are buses a good option? For example: Swebus.se shows me a one way bus for about 220 SEK from KÖPENHAMN Ingerslevsgade DGI - GÖTEBORG. So, first question, regarding this, these two stations are Copenhagen - Gothenburg? Secondly, how do I get from Copenhagen airport to the bus stop?
On the contrary, raileurope.com shows me a train for around 750 SEK one way. Thats a huge difference. Are there any cheaper trains available?