My estimated costs is based on a little experience as a Project Manager in the construction industry which followed a lengthy career in property management with the Royal Air Force - not huge experience in new build costs, but enough to let me know that a figure of £20m-£30m isn't going to pay for demolition of the Govan Stand followed by construction of a high quality replacement that will house, for arguments sake, 15,000 fans with the relevant hospitality facilities, restaurant and office space that exist in the current one. I'd say my £50-£75m is realistic, maybe even conservative, but there are others on here with much more experience than myself. I'm sure they will be along in due course. We could throw-up a meccano set similar to the Dhims for, perhaps, a bit less - but let's not go there!
We'd also lose the use of the stand for a season, which is a significant factor as well not only in terms of matchday attendances but with a need to re-locate hospitality, restaurant and office space elsewhere - perhaps by hiring-in temporary office units. Again, a cost.
I'd love us to re-develop Ibrox but the money isn't there right now - and probably won't be for some time. Any payback, I would suggest, needs to be measured in terms of 10+ years.